Synthesis 2016; 48(24): 4555-4563
DOI: 10.1055/s-0036-1588079
paper
© Georg Thieme Verlag Stuttgart · New York

Strategies towards the Synthesis of the Gilvocarcins

Maricela Morales-Chamorro
a   Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, C.P. 04510, Ciudad de México, Mexico
,
Omar Cortezano-Arellano
b   Current address: Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, Av. San Pablo 180, Col. Reynosa Tamaulipas, Azcapotzalco, C.P. 02200, Ciudad de México, Mexico   Email: acordero@unam.mx
,
Alejandro Cordero-Vargas*
a   Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, C.P. 04510, Ciudad de México, Mexico
› Author Affiliations
Further Information

Publication History

Received: 12 July 2016

Accepted after revision: 08 September 2016

Publication Date:
28 September 2016 (online)


Abstract

Two strategies for the synthesis of the gilvocarcins were explored in order to construct the C-arylglycosidic tricyclic core of these natural products. Whereas the addition of a complex naphthalene onto a carbohydrate-derived lactone, following Kishi’s protocol failed, the key C-glycosidic bond was successfully forged in a regio- and stereoselective manner through the use of TMS-acetylide as the nucleophile. Conversion of the alkyne into a diene and Diels–Alder cycloaddition with an in situ generated quinone allowed the assembling of a tricyclic structure which could serve as an advance synthetic intermediate for the synthesis of the gilvocarcins.

Supporting Information